Webcamoid - Webcamoid is a full featured webcam capture application.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Kamoso - Kamoso is a webcam recorder from KDE community.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Cameroid - Just like Photo Booth - exept is online. Have fun with your webcam. Apply text and funny effects.
LightShot - The fastest way to take a customizable screenshot.